*{
    margin: 0;
    padding: 0;
    list-style: none;
    border: none;
}

body{
    /*background: url("https://ss1.bdstatic.com/70cFuXSh_Q1YnxGkpoWK1HF6hhy/it/u=70463039,1710342132&fm=26&gp=0.jpg") no-repeat;*/
    /*background: url("../zls.jpg");*/
    background: url("https://ss0.bdstatic.com/70cFvHSh_Q1YnxGkpoWK1HF6hhy/it/u=1352688724,2861154854&fm=26&gp=0.jpg");
    background-attachment: fixed;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: 100% 10%;
}

a{
    text-decoration: none !important;
    color: #000000;
}

/*头部*/
#header{
    /*background-color: rgba(255,255,255,.6);*/
    background-color: papayawhip;
    width: 100%;
    height: 36px;
    line-height: 36px;

    /*固定定位*/
    position: fixed;
    left: 0;
    top: 0;

    cursor: pointer;
    z-index: 999;

    font-size: 18px;

}

#header .header-left li{
    float: left;
    margin-left: 15px;

}

#header .header-right li{
    float: right;
    margin-right: 15px;

}

/*内容*/
#content{
    position: relative;
}

#content .file{
    width: 100px;
    text-align: center;
    color: black;

    position: absolute;
    cursor: pointer;
}

#content .file img{
    width: 100px;

}

#content .file:nth-child(1){
    left: 20px;
    top: 50px;
}

#content .file:nth-child(2){
    left: 30px;
    top: 130px;
}

#content .file:nth-child(3){
    left: 30px;
    top: 230px;
}

#content .file:nth-child(4){
    left: 30px;
    top: 330px;
}

.video{
    position: fixed;
    width: 300px;
    height: 300px;
    top: 50%;
    left: 50%;
}

/*尾部*/
#footer{
    width: 100%;
    height: 60px;
    line-height: 60px;

    /*定位*/
    position: fixed;
    left: 0;
    bottom: 0;

    text-align: center;
}

#footer .dock{
    background: url("../images/dock_bg.png");
    width: 60%;
    height: 100%;

    /*块级标签居中*/
    margin: 0 auto;

    border-top-left-radius: 5px;
    border-top-right-radius: 5px;
}

#footer .dock ul{
    display: inline-block;
}

#footer .dock ul li{
    float: left;
    margin: 0 13px;

    /*设置动画的过渡效果*/
    transition: all 0.25ms linear;
}

#footer .dock ul li img{
    width: 50px;
}

/*动画*/
#footer .dock ul li:hover{
    /*设置动画方向  从底部往中间走*/
    transform-origin: bottom center;


    /*放大1.5倍*/
    transform: scale(1.5);


}